Misleading documentation and cmd line usage instructions

As a customer
I want that the documentation, configuration and cmd line usage of automatic data exports is not misleading
So that I understand the correct usage properly

The automatic backup term is misleading, as that implies that the data is copied where as our "backup" deletes the data from the DB.

We should rename the "automatic backup" as "automatic data export" in cmd line usage, configuration files and in documentation.